Portable Electroencephalograph ensures long-term (with recording the data into a removable Flash-card) ambulatory EEG-studies in the comfortable and friendly conditions for a patient Along with standard technology of EEG-monitoring, there is an original one that provides EEG-monitoring (up to 72 h) combined with functional EEG-studies for differential diagnosis (auditory- and photic stimulation, hyperventilation) or for pharmacotherapy control (the dynamics of threshold of readiness for convulsions). The studies are carried out in telemetric mode by means of wireless stimulation block at the beginning, in the process and at the end of monitoring.

Ambulatory studies consists of 3 stages:

Preparation. Instruction of a patient. Setting of electrodes, telemetric control of EEG-recording (checking electrodes impedance, etc.), carrying out functional tests with stimulation block.

Study. Recording of EEG within the process of an ordinary vital activity of a patient, patient's journal is kept using a digital event marker. One can change the accumulators in autonomous patient's block on one's own without interrupting of a studies (approximately every 20 h). Functional tests can be performed if necessary.

Completion. Carrying out of concluding functional tests. Recording of EEG and digital marker's data from the Flash-card to the doctor's PC, the analysis of obtained information, diagnosing, data saving.